JPH0122977Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a clutch booster device for facilitating clutch operation.

<Prior Art> Vehicles such as earthmoving vehicles are equipped with a clutch device that can intermittent the transmission of driving force from the engine to the drive system when starting or changing gears. The clutch device has a drive plate connected to the output side of the engine and a driven plate connected to the input side of the drive system. In the connected state, the drive plate and the driven plate are in pressure contact and the engine The driving force from is transmitted to the drive system, and on the other hand,
In the uncoupled state, the driving plate and the driven plate are in a non-contact state, and the driving force from the engine is not transmitted to the drive system.

In this type of clutch device, the drive plate is generally connected to an operating lever provided on the driver's seat of the vehicle body via a link mechanism, etc., and therefore, by operating the operating lever, the drive plate is is moved relative to the driven plate, thereby disconnecting or connecting the driving force.

However, in earthmoving vehicles, etc., the mechanism for moving the driving plate relative to the driven plate is an over-center cam link system, so a considerable amount of force is required to operate the operating lever, making it difficult to operate. It was a huge burden on people.

Therefore, various clutch booster devices have been proposed and put into practical use in order to reduce the burden during clutch operation, but none of these conventional clutch booster devices are fully satisfactory due to their complicated structures. It's not something you can do.

<Purpose of the invention> The present invention was made in view of the above facts, and its purpose is to provide an improved clutch booster device that has a simple configuration and can easily perform clutch operation. .

<Summary of the invention> According to the invention, there is an operating member mounted so as to be movable between a connecting position and a disconnecting position, a connecting position where the clutch device is in a connected state, and an unconnected position where the clutch device is in an unconnected state. an actuating member mounted to be movable between a connecting position; a hydraulic cylinder mechanism for actuating the actuating member; and a hydraulic cylinder mechanism selectively positioned at a neutral position, a first working position and a second working position. , a flow path switching valve for controlling the operation of the fluid pressure cylinder mechanism, and an auxiliary operating member, the flow path switching valve and the auxiliary operating member being arranged in parallel between the operating member and the operating member. one end of the flow path switching valve is connected to the operating member, the other end is connected to the operating member, and one end of the auxiliary operating member is connected to either the operating member or the operating member. The other end is connected to the operating member and the other of the operating member so as to be relatively movable over a predetermined range, and the operating member is relatively movable in the direction in which the operating member approaches the operating member. , the flow path switching valve is switched from the neutral position to the first operating position without the auxiliary actuating member substantially acting on the actuating member, while the operating member is moved to the first actuating position. Some movement relative to the member in a direction away from the member causes the flow path switching valve to move from the neutral position to the second operative position without the auxiliary actuating member substantially acting on the actuating member. When the operating member is operated relatively slowly from the connection position to the cutoff position, the fluid pressure cylinder mechanism is activated by the flow path switching valve that is switched from the neutral position to the first operation position. state, the actuating member is moved from the connected position to the uncoupled position by the action of the hydraulic cylinder mechanism, and when the operating member is operated relatively quickly from the connected position to the disconnected position. , prior to the action of the hydraulic cylinder mechanism, the other end of the auxiliary actuating member acts on the operating member and the other of the actuating members, and the actuating member is moved from the connected position by the action of the auxiliary actuating member. The flow path switching valve is moved toward the uncoupled position, and is switched from the neutral position to the second operating position when the operating member is operated relatively slowly from the blocking position to the connecting position. The hydraulic cylinder mechanism is put into operation,
the actuating member is moved from the uncoupled position toward the coupled position by action of the hydraulic cylinder mechanism;
Further, when the operating member is operated relatively quickly from the blocking position to the connecting position, the other end of the auxiliary operating member is connected to the operating member and the operating member prior to the action of the hydraulic cylinder mechanism. There is provided a clutch booster device, characterized in that the actuating member is moved from the disengaged position toward the engaged position by the action of the auxiliary actuating member.

<Preferred Specific Example of the Invention> Hereinafter, a preferred specific example of the clutch booster device constructed according to the present invention will be described with reference to the accompanying drawings.

With reference to FIGS. 1 and 2, a clutch device known per se, designated by the numeral 2 (part of which is shown in FIG. 1), comprises a clutch housing 4. Although not shown, a drive plate connected to the output side of the engine and a driven plate connected to the input side of the drive system are disposed inside the clutch housing 4.

Associated with the clutch device 2 is a clutch booster device, generally designated by the numeral 6. The illustrated clutch booster device includes an actuating member 8 and an operating member 10. One end of the actuating member 8 is pivotally connected to the clutch housing 4 via a pin member, and the actuating member 8 is pivotable between a connected position shown in FIG. 1 and an uncoupled position shown in FIG. be. One end of the actuating member 8 is further connected to a drive plate (not shown) via a cam linkage (not shown). When the actuating member 8 is in the connected position, the driving plate (not shown) is pressed against the driven plate (not shown) via the cam linkage, and the clutch device 2 is thus in the connected state. On the other hand, when the actuating member 8 is in the above-mentioned connected position, the driving plate and the driven plate are in a non-contact state via the cam link mechanism, and thus the clutch device 2 is in a non-connected state.

The operating member 10 is disposed at the driver's seat of the vehicle body. A support member 16 is fixed to a portion 14 of the vehicle body, and an operation member 10 is attached to the support member 16.
The lower end portion of is rotatably mounted via a pin member 18. An operating section 10 is provided at the upper end of the operating member 10.
By operating this operating portion 10a, the operating member 10 can be moved to the connection position shown by the solid line in FIG.
It can be freely rotated between the cutoff position shown in the figure. A first lever portion 20 and a second lever portion 22 are further integrally provided at the lower end portion of the operating member 10 described above. The first lever part 20 is a wire member 2
4 to the transmission (not shown) side.

First blocking means 26 are provided on both sides of the operating member 10.
and second blocking means 28 are provided. 1st
The blocking means 26 and the second blocking means 28 are bolt members 32a and 32b inserted through mounting members 30a and 30b fixed to a part of the vehicle body.
(constituting the abutting member), and the bolt member 32
Nut members 34a and 34b are screwed onto the tips of a and 32b that protrude from the mounting members 30a and 30b. Therefore, the bolt members 32a and 32b have their heads attached to the mounting members 30a and 30a.
0b and the nut members 34a and 34
b is mounted so as to be movable between positions where it abuts the mounting members 30a and 30b. In the specific example, a compression coil spring 36 is further provided between the heads of the bolt members 32a and 32b and the mounting members 30a and 30b.
a and 36b (constituting a spring member) are provided. These compression coil springs 36a and 36b
moves the bolt members 32a and 32b closer to the operating member 10 (one compression coil spring 36a moves the bolt member 32a to the right in FIG. 1, and the other compression coil spring 36b moves the bolt member 32b closer to the operating member 10).
to the left in Fig. 1),
The bolt members 32a and 32b are normally moved by the action of the compression coil springs 36a and 36b.
The nut members 34a and 34b are held in contact with the mounting members 30a and 30b, that is, in the state shown in FIG. 1. With this structure, when the operating member 10 is pivoted to the above connection position, a portion thereof comes into contact with the head of the bolt member 32a, thus preventing the operating member 10 from pivoting beyond the above connection position. Further, when the operating member 10 is turned to the above-mentioned blocking position, a part of the operating member 10 comes into contact with the head of the other bolt member 32b, and thus the operating member 10
A pivoting movement beyond the above-mentioned blocking position is prevented.

A flow path switching valve 38 and an auxiliary operating member 40 are arranged between the operating member 10 and the operating member 8 described above. The flow path switching valve 38 has a main body 42 and a main body 4.
The main body 42 has a valve member movably attached to the operating member 10 (only its operating part 44 is shown), and the main body 42 is pivotable via a pin member 45 to the second lever part 22 provided on the operating member 10. The operating portion 44 of the valve body is rotatably connected to the other end of the actuating member 8 via a rod member 46 via a pin member 47. The flow path switching valve 38 connects the main body 42 to the operating member 8 and also connects the operating member 4 to the operating member 8.
4 may be connected to the second lever portion 22. Further, the auxiliary actuating member 40 has a hole 48 formed at one end and a long hole 50 at the other end. The auxiliary operating member 40 has one end pivotally connected to the second lever portion 22 of the operating member 10 by inserting the pin member 45 into the hole 48 .
By inserting the pin member 47 into the elongated hole 50, the other end can be rotated to the actuating member 8 over a predetermined range, that is, the position where the pin member 47 abuts one end of the elongated hole 50 and the position where the pin member 47 is long It is mounted so as to be relatively movable between positions abutting the other end of the hole 50. The auxiliary actuation member 40 may also have one end connected to the actuation member 8 and the other end attached to the second lever portion 22 so as to be movable over a predetermined range. As described above, since the flow path switching valve 38 and the auxiliary operating member 40 are arranged in parallel, the operating member 1
0 from the connecting position to the blocking position by a predetermined amount in the direction shown by the arrow 52 (that is, the auxiliary actuating member 40 moves and the pin member 47 moves into the elongated hole 5
0), the main body 42 of the flow path switching valve 38 and the valve member are moved relative to each other as the operating member 10 moves, and the auxiliary operating member 4
0 is moved relative to the actuating member 8 and has no substantial effect on this actuating member 8. Similarly, the operating member 10 is rotated by a predetermined amount in the direction opposite to the direction indicated by the arrow 52 from the blocking position to the connecting position (i.e., the auxiliary operating member 40 moves and the pin member 47 moves beyond the elongated hole 50). (abuts the edge)
Up to this point, as the operating member 10 moves, the main body 42 of the flow path switching valve 38 and the valve member are moved relative to each other, and the auxiliary operating member 40 is moved relative to the operating member 8, and the auxiliary operating member 40 is moved relative to the operating member 8. There is no substantial effect on member 8.

The clutch booster device 6 described above further includes a hydraulic cylinder mechanism 54 for moving the actuating member 8. There is a mounting member 56 on the vehicle body.
A mounting bracket 58 is fixed to the mounting member 56, and the main body of the hydraulic cylinder mechanism 54 is rotatably connected to the mounting bracket 58 via a pin member 60. Further, a mounting bracket 62 is fixed to the intermediate portion of the actuating member 8, and a mounting bracket 64 fixed to the output portion of the fluid pressure cylinder mechanism 54 is attached to the mounting bracket 62.
are rotatably connected via a pin member 66. The hydraulic cylinder mechanism 54 may have an output connected to a mounting bracket 58 and a main body connected to a mounting bracket 62 of the actuating member 8.

A protrusion 68 is further provided at the intermediate portion of the above-mentioned actuating member 8, and the protrusion 68 is connected to a link member (not shown) of the inertia brake device via a pin member. Therefore, when the actuating member 8 is in the above-mentioned connected position, the inertia brake device is brought into a non-braking state through the link member, and on the other hand, when the actuating member 8 is in the above-mentioned unconnected position, the inertia brake device is brought into the non-braking state through the link member. The shear brake device enters the braking state.

The operation of the fluid pressure cylinder mechanism 54 is controlled by a fluid pressure control circuit shown in FIG. Mainly referring to FIG. 3, a pressure fluid tank 70 containing pressure fluid such as pressure hydraulic oil and the flow path switching valve 3 are shown.
8 refers to the fluid supply channel 72 and the fluid return channel 74.
connected by. A fluid pump 76 and a filter member 78 are disposed in the fluid supply channel 72, and a relief valve 80 is further disposed downstream of the filter member 78. Therefore, when the fluid pressure on the downstream side of the filter member 78 of the fluid supply channel 72 exceeds a predetermined value, the relief valve 80 closes.
is opened and excess fluid is returned to pressure fluid reservoir 70 through relief channel 82 and fluid return channel 74. In a specific example, the fluid downstream of filter member 78 is connected to a transmission (not shown).
It is configured to be delivered to Further, the flow path switching valve 38 and the contraction side (i.e., the rod side) of the fluid pressure cylinder mechanism 54 are connected via a first fluid flow path 84. The extension side (i.e. head side) is the second
are connected via a fluid flow path 86. In a specific example, the flow path switching valve 38 comprises a closed center type switching valve that can be selectively placed in a neutral position, a first working position, and a second working position, and in the neutral position, the fluid supply flow path 72 is closed. and the fluid return channel 74 is not connected to the first fluid channel 84 and the second fluid channel 86. When the flow path switching valve 38 is placed in the first working position, the fluid supply flow path 72 is connected to the second fluid flow path 86 and the fluid return flow path 74 is connected to the first fluid flow path 84. When the flow path switching valve 38 is placed in the second operating position, the fluid supply flow path 72 is connected to the first fluid supply flow path 84 and the fluid return flow path 74 is connected to the second fluid flow path 86. be done.

Next, along with Figures 1 and 3, Figures 4 and 5
The effects of the clutch booster device having the above-mentioned configuration will be explained with reference to the drawings.

To cut off the driving force from the engine to the drive system, rotate the operating member 10 in the connection position shown by the solid line in FIG. 1 in the direction shown by the arrow 52 (FIG. 1), and and positioned at the cutoff position shown in FIG.

When the operating member 10 is moved from the connecting position to the blocking position as required, in other words, relatively slowly, while the operating member 10 is pivoted by a predetermined amount from the connecting position to the position shown in FIG. 4-A. Figure 1, Figure 4-A, and Figure 4-
As can be understood by comparing FIG. The actuating member 40 only moves downward relative to the actuating member 8 and does not substantially act on the actuating member 8. When the operating member 10 is rotated to the position shown in FIG. 4-A as described above, the passage switching valve 38 is moved from the neutral position to the first operating position due to the relative movement of the main body 42 and the valve member. The fluid supply channel 72 is switched to the second
and the fluid return passage 74 is connected to the first fluid passage 84 . In this position, as shown in FIG. 4-B, the pin member 47 attached to the actuating member 8 moves relatively from the center of the elongated hole 50 formed in the auxiliary actuating member 40 to the upper end thereof. It is positioned in When the flow path switching valve 38 is switched, the fluid in the pressure fluid tank 70 is transferred to the extension side of the hydraulic cylinder mechanism 54 through the fluid supply flow path 72 and the second fluid flow path 86 by the action of the fluid pump 76. Along with being supplied,
The fluid on the contraction side of the fluid pressure cylinder mechanism 54 is returned into the pressure fluid tank 70 through the first fluid flow path 84 and the fluid return flow path 74, and the fluid on the contraction side of the fluid pressure cylinder mechanism 54
is forced to expand. When stretched in this way,
Due to the action of the fluid pressure cylinder mechanism 54, the actuating member 8 is rotated counterclockwise in FIG. 4-A using one end as a fulcrum, from the connected position shown in FIG. 1 to the unconnected position shown in FIG. The clutch device 2 is thus disengaged. In a specific example, after the operating member 10 is positioned at the blocking position, the operating member 8 is further rotated slightly counterclockwise in FIG. 4-A to be positioned at the uncoupled position. ing.
Therefore, immediately before the actuating member 8 is positioned at the uncoupled position, the actuating member 10 comes into contact with the second blocking means 28 and is prevented from pivoting beyond the blocking position; 8 is further pivoted counterclockwise in FIG. 4-A by the action of the hydraulic cylinder mechanism 54. Operation member 1
0 is positioned at the blocking position until the actuating member 8 is positioned at the uncoupled position, the main body 42 of the flow path switching valve 38 and the valve member are relatively moved in a direction in which they are separated from each other, The auxiliary actuating member 40 does not substantially move, and the pin member 47 attached to the actuating member 8 moves within the elongated hole 50 formed in the auxiliary actuating member 40 from the upper end toward the center. When the actuating member 8 is positioned in the uncoupled position as described above, the passage switching valve 38 is switched from the first working position to the neutral position by the relative movement between the main body 42 and the valve member, and the fluid is switched from the first operating position to the neutral position. The communication state between the supply flow path 72 and the second fluid flow path 86 and the communication state between the fluid return flow path 74 and the first fluid flow path 84 are released, and the actuating member 8 is thus held in the above-mentioned uncoupled position.

Further, when the operating member 10 is moved relatively quickly from the connecting position to the blocking position, the operating member 8 moves to the above-mentioned fluid pressure cylinder mechanism 5.
4 is operated by an auxiliary actuating member 40. That is, the operating member 10 is moved from the connection position to the fourth position.
When the fluid pressure cylinder mechanism 54 is turned by a predetermined amount to the position shown in FIG. On the other hand, when the operating member 10 is positioned at the position shown in FIG. 4-A, the pin member 47 is clearly shown in FIG. 4-B.
is in contact with the upper end of a long hole 50 formed in the auxiliary actuating member 40, and the actuating member 8 is connected to the hydraulic cylinder mechanism 5.
4, but is moved from the connected position to the unconnected position by the action of the auxiliary actuating member 40. More specifically, when the operating member 10 is moved relatively quickly, the operating speed when the fluid pressure cylinder mechanism 54 is extended becomes smaller than the moving speed of the auxiliary operating member 40 as the operating member 10 pivots. The moving speed of the actuating member 8 by the pressure cylinder mechanism 54 is smaller than the moving speed of the actuating member 8 via the auxiliary actuating member 40, so that the actuating member 8
The force from the operating member 10 is transmitted to the auxiliary operating member 40 and the pin member 47, and the operating member 8 is moved by the auxiliary operating member 40 from the connected position to the unconnected position. When the clutch device 2 is positioned in the uncoupled position, the clutch device 2 becomes disengaged, and the transmission of driving force from the engine is instantaneously interrupted. In addition, at this time as well, the operating member 1
0 is positioned in the above-mentioned cutoff position, the hydraulic cylinder mechanism 54 is further extended slightly, thereby switching the flow path switching valve 38 from the first working position to the neutral position, and thus the actuating member 8 is moved into the above-mentioned shutoff position. held in an uncoupled position.

In the specific example, the bolt member 32b of the second blocking means 28 is elastically biased in a direction closer to the operating member 10. As can be easily understood from the above description, this is because the compression coil spring 36b
When the operating member 10 is turned to the maximum extent in the direction shown by the arrow 52 against the biasing action of 50 and thus there is no stroke to switch the flow path switching valve 38 from the first operating position to the neutral position. Therefore, by slightly returning the operating member 10 from the maximum pivot position by the action of the compression coil spring 36b, a stroke for bringing the flow path switching valve 38 to the neutral position is secured, and thus the flow path This prevents the switching valve 38 from remaining in the first operating position.

On the other hand, when connecting the driving force from the engine to the drive system, it is indicated by the two-dot chain line in Fig.
The operating member 10 in the blocking position shown in the figure is indicated by the arrow 52.
(Fig. 1) and position it in the connection position shown by the solid line in Fig. 1.

When the operating member 10 is moved relatively slowly from the blocking position to the connecting position, the operating member 10 is rotated by a predetermined amount from the blocking position (that is, the pin member 47 attached to the operating member 8 performs auxiliary operation). As can be understood from the above description, as the operating member 10 moves, the flow path switching valve 38 moves relatively from the center of the elongated hole 50 of the member 40 until it comes into contact with the lower end thereof. Although the main body 42 and the valve member are moved relative to each other in a direction away from each other, the auxiliary actuating member 40 only moves upward relative to the actuating member 8 and substantially acts on the actuating member 8. Never. Therefore, the operating member 1
0 is rotated by a predetermined amount as described above, the passage switching valve 38 is switched from the neutral position to the second operating position by the relative movement of the main body 42 and the valve member, and the fluid supply passage 72 is switched to the first operating position. and the fluid return passage 74 is connected to a second fluid passage 86 . Thus, the pressure fluid tank 7
0 is supplied to the contraction side of the hydraulic cylinder mechanism 54 through the fluid supply passage 72 and the first fluid passage 84 by the action of the fluid pump 76, and also to the extension side of the hydraulic cylinder mechanism 54. The fluid is returned into the pressure fluid tank 70 through the second fluid flow path 86 and the fluid return flow path 74, and
4 is deflated. When it is contracted in this manner, the actuating member 8 is rotated clockwise in FIG. 5 with one end as a fulcrum by the action of the hydraulic cylinder mechanism 54, from the uncoupled position shown in FIG. 5 to the coupled position shown in FIG. 1. be moved to a certain position.
Immediately before the operating member 8 is positioned at the connected position, the operating member 10 comes into contact with the first blocking means 26 and is prevented from pivoting beyond the connected position, similar to when the operating member 8 is positioned at the uncoupled position. However, on the other hand, the actuating member 8 is further rotated clockwise in FIG. Until it is positioned at The pin member 47 moved from the lower end toward the center within the elongated hole 50 formed in the auxiliary actuating member 40. When the actuating member 8 is thus positioned in the uncoupled position, the passage switching valve 38 is switched from the second working position to the neutral position by the relative movement between the main body 42 and the valve member, The actuating member 8 is thus held in the above-mentioned connected position and the clutch device 2 is held in the connected state.

Further, when the operating member 10 is moved relatively quickly from the blocking position to the connecting position, the operating member 8 is moved relatively quickly from the connecting position to the blocking position.
is operated by an auxiliary actuating member 40 instead of the fluid pressure cylinder mechanism 54. That is, the operating member 10
When the fluid pressure cylinder mechanism 54 is rotated a predetermined amount from the connected position, as is easily understood, the flow path switching valve 38 is switched from the neutral position to the second operating position, and the fluid pressure cylinder mechanism 54 is put into the operating state. On the other hand, as a result, the pin member 47 provided in the actuating member 8 comes into contact with the lower end of the elongated hole 50 formed in the auxiliary actuating member 40, and the actuating member 8
Rather, it is moved from the connected position to the unconnected position by the action of the auxiliary actuating member 40. More specifically, when the operating member 10 is moved relatively quickly, the operating speed when the fluid pressure cylinder mechanism 54 is contracted becomes smaller than the moving speed of the auxiliary operating member 40 as the operating member 10 rotates, and therefore the operating speed is reduced. The force from the operating member 10 is transmitted to the member 8 via the auxiliary actuating member 40 and the pin member 47, and the actuating member 8 is moved by the auxiliary actuating member 40 from the blocking position to the connecting position. When the clutch device 2 is in the connected position, the clutch device 2 is disengaged, and the transmission of driving force from the engine is cut off. At this time as well, after the operating member 10 is positioned at the connection position, the fluid pressure cylinder mechanism 54 is further contracted slightly, thereby switching the flow path switching valve 38 from the second operating position to the neutral position. The actuating member 8 is thus held in the above-mentioned connected position.

In the specific example, the bolt member 32a of the first blocking means 26 is elastically biased in a direction closer to the operating member 10. As can be easily understood from the above description, this is because the compression coil spring 36a
When the operating member 10 is turned to the maximum extent in the direction opposite to the direction indicated by the arrow 52 against the biasing action of long hole 50
continues to abut the lower end of the flow path switching valve 38, so that there is no stroke for switching the flow path switching valve 38 from the second working position to the neutral position. Therefore, by slightly returning the operating member 10 from the maximum pivot position by the action of the compression coil spring 36a, a stroke for bringing the flow path switching valve 38 to the neutral position is secured, and thus the flow path This prevents the switching valve 38 from remaining in the second operating position.

In the clutch booster device 6 of this specific example, the operating member 10 can be positioned at any position between the connecting position and the blocking position. The clutch can be held in any position between the engaged position shown in FIG. 5 and the uncoupled position shown in FIG.

Although a specific example of a clutch booster device configured according to the present invention has been described above, the present invention is not limited to this specific example, and various modifications and modifications can be made without departing from the scope of the present invention. is possible.

[Brief explanation of drawings]

FIG. 1 is a simplified partial cross-sectional view of one embodiment of a clutch booster device constructed in accordance with the present invention. FIG. 2 is an exploded view of the main parts of the clutch booster device shown in FIG. 1. 3 is a diagram showing a fluid pressure control circuit for controlling the fluid pressure cylinder mechanism in the clutch booster device of FIG. 1; FIG. Figures 4-A and 4-B show a state in which the operating member of the clutch booster device shown in Figure 1 has been rotated a predetermined amount from the connected position, and the positions of the flow path switching valve and the auxiliary operating member in this state. Diagram showing relationships. FIG. 5 is a diagram showing a state in which the operating member of the clutch booster device of FIG. 1 is placed in a cutoff position. 2... Clutch device, 4... Clutch housing, 6... Clutch booster device, 8... Operating member, 10... Operating member, 38... Channel switching valve, 4
0... Auxiliary operating member, 47... Pin member, 50...
...Elongated hole, 54...Fluid pressure cylinder mechanism.

Claims (1)

[Claims for Utility Model Registration] 1. An operating member mounted so as to be movable between a connected position and a disconnected position, a connected position where the clutch device is in a connected state, and an uncoupled position where the clutch device is in a disconnected state. an actuating member mounted movably between the actuating member; a hydraulic cylinder mechanism for actuating the actuating member; A flow path switching valve for controlling the operation of a fluid pressure cylinder mechanism, and an auxiliary operating member, the flow path switching valve and the auxiliary operating member being arranged in parallel between the operating member and the operating member. , one end of the flow path switching valve is connected to the operating member, and the other end is connected to the operating member, and one end of the auxiliary operating member is connected to either the operating member or the operating member. and the other end is connected to the operating member and the other of the operating members so as to be relatively movable over a predetermined range, and the operating member is relatively movable in a direction approaching the operating member. , the flow path switching valve is switched from the neutral position to the first operating position without the auxiliary actuating member substantially acting on the actuating member, while the operating member is acting on the actuating member. When the auxiliary actuating member is moved somewhat away from the actuating member, the flow path switching valve is switched from the neutral position to the second actuating position without the auxiliary actuating member substantially acting on the actuating member. and when the operating member is operated relatively slowly from the connection position to the cutoff position, the fluid pressure cylinder mechanism is brought into operation by the flow path switching valve that switches from the neutral position to the first operation position. When the operating member is moved from the connected position to the uncoupled position by the action of the hydraulic cylinder mechanism, and when the operating member is operated relatively quickly from the connected position to the disconnected position,
Prior to action of the hydraulic cylinder mechanism, the other end of the auxiliary actuating member acts on the operating member and the other of the actuating members, and the actuating member is moved from the connected position by the action of the auxiliary actuating member. and when the operating member is operated relatively slowly from the blocking position to the connecting position, the flow path switching valve switches from the neutral position to the second operating position. The hydraulic cylinder mechanism is activated, the actuating member is moved from the uncoupled position towards the coupled position by action of the hydraulic cylinder mechanism, and the operating member is directed from the disconnected position to the coupled position. When operated relatively quickly, the other end of the auxiliary actuating member acts on the operating member and the other of the actuating member prior to the action of the hydraulic cylinder mechanism, and the actuating member acts on the auxiliary actuating member. A clutch booster device, characterized in that the clutch booster device is moved from the uncoupled position to the coupled position by the action of. 2. A long hole is formed in the other end of the auxiliary actuation member, a pin member is provided in the other of the operation member and the actuation member, and the pin member is movable relative to the long hole. When the operating member is received and moved by a predetermined amount relative to the operating member in a direction approaching the operating member, the pin member moves relatively from the center of the elongated hole and comes into contact with one end thereof. contact,
Further, when the operating member is moved a predetermined amount relative to the operating member in a direction away from the operating member, the pin member moves relatively from the center of the elongated hole and comes into contact with the other end.Utility model registration Clutch booster device according to claim 1. 3. The flow path switching valve has a main body and a valve member movably attached to the main body, the main body is connected to either the operating member and the operating member, and the valve member is connected to the operating member and the operating member. coupled to the other of the actuating members, the pin member substantially acting on the auxiliary actuating member when the actuating member is moved the predetermined amount in a proximal direction relative to the actuating member; When the flow path switching valve is switched from the neutral position to the first operating position and the operating member is moved by the predetermined amount in a direction away from the operating member, the pin 3. A clutch booster device according to claim 2, wherein said flow path switching valve is switched from said neutral position to said second operating position without any member substantially acting on said auxiliary actuating member. 4. Utility model registration claim 1, which is provided with a first blocking means for preventing movement of the operating member beyond the connection position and a second blocking means for preventing movement of the operating member beyond the blocking position. Clutch booster device according to any one of items 1 to 3. 5. The first blocking means and the second blocking means are:
Claim 4 of the utility model registration claim, which includes a contact member movably mounted over a predetermined range, and a spring member that elastically biases the contact member in a direction approaching the operating member. Clutch booster device as described.